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Chapter 4a
Chapter 4a

... • Made of chains of flagellin • Attached to a protein hook • Anchored to the wall and membrane by the basal body Figure 4.8 ...
Biochemistry_Written_Tests.doc
Biochemistry_Written_Tests.doc

... 124. Give the principle steps in biosynthesis and β-oxidation of fatty acids. a. Synthesis: 1)export of acetyl-coA to cytosol 2)formation of malonyl-coA 3)reduction 4)dehydration 5) reduction. Degradation: 1)transport of fatty acyl-coA into mitochondria (by carnitine) 2) oxidation 3)hydration 4)oxid ...
Slide 1
Slide 1

... and anaerobic (B) glycolysis. Glucose is phosphorylated to glucose-6-phosphate and subsequently to fructose-1,6-bisphosphate via fructose-6-phosphate and phosphofructokinase 1, the main regulatory enzymes in brain glycolysis. NADH is produced in the conversion of glyceraldehyde-3-phosphate to 1,3-bi ...
Chapter 7
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... Disaccharides are the simplest oligosaccharides Two monosaccharides linked by a glycosidic bond Each unit in an oligosaccharide is termed a residue Each of the structures in Figure 7.18 is a “mixed acetal”, with one hydroxyl provided intramolecularly and one hydroxyl from the other monosaccharide • ...
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ppt - Chair of Computational Biology

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Glycolysis

... -In the exercising muscle a lot of NADH is produced from glycolysis and from citric acid that exceed the oxidative capacity of respiratory chain elevation of NADH/NAD+ ratio  favoring the reduction of pyruvate to lactate accumulation  drop of pH muscle cramps Much of lactate diffuses into the b ...
документ
документ

... acids. Chemical synthesis usually results in obtaining a mixture of d,l-racemates (Daub, 1979). Although chemomicrobiological synthesis overcomes this problem (Walker, 1986), the amount of purified enzymes required is prohibitive (Faleev, 1989). By growing algae on media with 96% (v/v) 2H2O, the des ...
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Biochemistry review

... arachidonic acid, which type of supplement listed would be useful in increasing eicosapentaenoic acid (EPA) and Omega 3s docosahexanoic acid (DHA) levels? a. glucosamine and chondroitin b. B complex with B6, B12 and folate c. cold water fish oil supplement d. ADEK, the fat soluble vitamins ...
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Metabolism



Metabolism (from Greek: μεταβολή metabolē, ""change"") is the set of life-sustaining chemical transformations within the cells of living organisms. These enzyme-catalyzed reactions allow organisms to grow and reproduce, maintain their structures, and respond to their environments. The word metabolism can also refer to all chemical reactions that occur in living organisms, including digestion and the transport of substances into and between different cells, in which case the set of reactions within the cells is called intermediary metabolism or intermediate metabolism.Metabolism is usually divided into two categories: catabolism, the breaking down of organic matter by way of cellular respiration, and anabolism, the building up of components of cells such as proteins and nucleic acids. Usually, breaking down releases energy and building up consumes energy.The chemical reactions of metabolism are organized into metabolic pathways, in which one chemical is transformed through a series of steps into another chemical, by a sequence of enzymes. Enzymes are crucial to metabolism because they allow organisms to drive desirable reactions that require energy that will not occur by themselves, by coupling them to spontaneous reactions that release energy. Enzymes act as catalysts that allow the reactions to proceed more rapidly. Enzymes also allow the regulation of metabolic pathways in response to changes in the cell's environment or to signals from other cells.The metabolic system of a particular organism determines which substances it will find nutritious and which poisonous. For example, some prokaryotes use hydrogen sulfide as a nutrient, yet this gas is poisonous to animals. The speed of metabolism, the metabolic rate, influences how much food an organism will require, and also affects how it is able to obtain that food.A striking feature of metabolism is the similarity of the basic metabolic pathways and components between even vastly different species. For example, the set of carboxylic acids that are best known as the intermediates in the citric acid cycle are present in all known organisms, being found in species as diverse as the unicellular bacterium Escherichia coli and huge multicellular organisms like elephants. These striking similarities in metabolic pathways are likely due to their early appearance in evolutionary history, and their retention because of their efficacy.
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